The down slippers are ok. I have read earlier opinions and it's true they would work better if they had the down in compartments (like in down jackets), you need to disperse the down manually. But they are still warm and comfy, worth the price. They need a moment to gain volume after unpacking from their very small bag (which will be very convenient for travelling). The package arrived to Poland in 3 weeks. I wear European size 39 and they fit, but I guess from no. 40 you should get the bigger ones.
it is OK. nice quality!